Shortfin Molly tank mates
Poecilia mexicana
5 rated pairings from the Shortfin Molly care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Shortfin Molly needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Guppy
Poecilia reticulata
10 gal min · 2" adult · Peaceful
Similar size, peaceful temperament, and identical water parameter requirements make them ideal companions
Platy
Xiphophorus maculatus
10 gal min · 2.5" adult · Peaceful
Fellow livebearers with matching care needs and peaceful behavior; compatible water chemistry
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful algae eater that won't compete for food and helps control excess vegetation
Good matches
1 · Compatible with normal care — watch space and numbers.
Use caution
1 · Works in the right setup; read the note before combining.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.